User Manual

WORKING WITH HOST AUDIO SOFTWARE

☛ It is important to note that monitoring delay

has no effect on the recording, or playback, of

audio data from disk. The actual recording and

playback is extremely precise, it is only the

monitoring of your live input signal which may be

delayed.

Adjusting your host software audio buffer

Buffers are small bundles of audio data. Your

interface “speaks” to your computer in buffers,

rather than one sample at a time. The size of these

buffers determine how much delay you hear when

monitoring live inputs through your audio

software: larger buffers produce more delay;

smaller buffers produce less.

Adjusting buffer size on Mac OS X

Under Mac OS X, audio I/O buffer size is handled

by the host audio application (not by your MOTU

interface’s Core Audio driver). Most audio software

applications provide an adjustable audio buffer

setting that lets you control the amount of delay

you’ll hear when monitoring live inputs or

processing them with software plug-ins. Here are a

few examples.

Figure 7-4: In Logic Pro, go to the Audio Driver preferences to access

the Buffer Size option shown above.

Figure 7-5: In Digital Performer and AudioDesk, choose Setup menu>

Conﬁgure Audio System> Conﬁgure Hardware Driver to open the

dialog shown above and access the Buffer Size setting. Refer to your

Digital Performer or AudioDesk manual for information about the

Host Buffer Multiplier setting.

Figure 7-6: In Cubase or Nuendo, choose Devices menu > Device

Setup. Select your interface (24Ai or 24Ao), then click the Control

Panel button to access the window above and the Buffer Size setting.

Adjusting buffer size on Windows

To adjust buffer size on Windows, visit the MOTU

AVB USB Control Panel. See “MOTU AVB USB

Control Panel” on page 30.